module teapo.app.tests {

  export class TestCase {

    state = ko.observable(TestCase.State.NotStarted);

    runtime = ko.observable<number>(null);

    failure = ko.observable<Error>(null);

    private _started = -1;

    constructor(

      public name: string,

      private _test: Function) {

    }

    start() {

      if (this.state() !== TestCase.State.NotStarted)

        throw new Error('Test case already started (' + TestCase.State[this.state()] + ').');

      this.state(TestCase.State.Running);

      this.runtime(0);

      this._started = 0;

      var failed = false;

      var failure: Error = null;

      try {

        var test = this._test;

        test();

      }

      catch (error) {

        failed = true;

        failure = error;

      }

      var now = Date.now();

      this.runtime(now - this._started);

      if (failed) {

        this.failure(failure);

        this.state(TestCase.State.Failed);

      }

      else { 

      }

    }

  }

  export module TestCase {

    export enum State {

      NotStarted,

      Running,

      Succeeded,

      Failed

    }

  }

}